California Air Resources Board 2006 Almanac (web)			
Chapter 5	San Joaquin Valley		Table 5-46
"San Joaquin Valley - 1,3-Butadiene"			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	3	1%	0%
Area-wide Sources	155	35%	6%
On-Road Mobile	138	32%	5%
   Gasoline Vehicles	134	31%	5%
   Diesel Vehicles	4	1%	0%
Other Mobile	142	32%	5%
   Gasoline Fuel	74	17%	3%
   Diesel Fuel	10	2%	0%
   Other Fuel	58	13%	2%
Natural Sources	0	0%	0%
Total	439	100%	16%
Total Statewide	2778